Microscopically porous, interconnected single crystal LiNi1/3Co1/3Mn1/3O2cathode material for Lithium ion batteries

Zhen Dong Huang, Xian Ming Liu, Sei Woon Oh, Biao Zhang, Peng Cheng Ma, Jang Kyo Kim

Research output: Journal article publicationJournal articleAcademic researchpeer-review

155 Citations (Scopus)

Abstract

A porous cathode material consisting of interconnected single crystal LiNi1/3Co1/3Mn1/3O2(NCM) nanoparticles has been synthesized for lithium ion batteries. Trace nitric acid is used as pH value adjuster to form honeycomb-shaped foam, and a novel stepwise crystallization process is employed to obtain NCM particles. The modified sol-gel process followed by an optimized crystallization process results in significant improvements in chemical and physical characteristics of the NCM particles. They consist of a fully-developed single crystal NCM with uniform composition and a porous NCM architecture with a reduced degree of fusion and a large specific surface area. These structural modifications in turn significantly enhance the electrochemical properties of the NCM cathode material, in terms of improved charge/discharge capacity, cyclic stability and rate capability.
Original languageEnglish
Pages (from-to)10777-10784
Number of pages8
JournalJournal of Materials Chemistry
Volume21
Issue number29
DOIs
Publication statusPublished - 7 Aug 2011
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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